在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。
但有些同学们对于哪些主语是第三人称单数还不十分清楚，现归纳总结如下：一、人称代词he, she, it是第三人称单数。
如：He likes watching TV. 他喜欢看电视。
She has lunch at twelve. 她十二点吃午餐。
It looks like a cat. 它看起来像只猫。
二、单个人名、地名或称呼作主语；是第三人称单数。
如：①Han Mei looks like her mother. 韩梅看起来像她的母亲。
②Beijing is in China. 北京在中国。
③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。
三、单数可数名词或"this / that / the+单数可数名词"作主语时，是第三人称单数。
如：①A horse is a useful animal. 马是有用的动物。
②This book is yours. 这本书是你的。
③That car is red. 那辆小汽车是红色的。
④The cat is Lucy's. 这只猫是露茜的。
四、不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。
如：①Everyone is here. 大家到齐了。
②There is something wrong with the watch. 这块手表有毛病。
③This is a pen. 这是一支钢笔。
④That is an eraser. 那是一块橡皮擦。
五、不可数名词作主语时为第三人称单数。
如：①The milk is in the glass. 牛奶在玻璃杯里。
②The bread is very small. 那面包很小。
六、当数字或字母作主语时，看作第三人称单数。
如：①"6" is a lucky number. "6"是个吉利数字。
②"I" is a letter. "I"是个字母。
巩固练习题：I.写出下列动词的相应形式：1. 第三人称单数：wash_________ match _______guess______ study______finish_________ go________ snow______ carry_________2.写出下列动词的过去式：stop______ see________ drive ________let_______ carry______keep_____ join______ find_______ think________ teach______ catch______ 3. 写出下列动词的现在分词形式：stay_______ begin______ forget_______forget______ lie________ die _______ run_______ prefer______ give________ring_______ dance______ hope_______II. 用所给动词的适当形式填空：1．I ________(write) to you as soon as I _______(get) to London.2. He doesn’t feel well and ____________(not eat) any food this morning.3. He ______ not _______(see) me come in, for he ___________(read) something with greatinterest.4. I _________(let) you have the book as soon as I _________(finish) it.5. While we ________(wait) for our teacher, a little boy ________(run) up to us.6. Don’t make a noise. Grandpa __________(sleep).7.It’s seven now, Tom’s family__________(watch) TV.8. It ________(take) me two hours to finish my homework last night.9. What ______ your mother _______(do) at eight yesterday evening? She _______(wash)clothes.10. _______ it ______ (rain) when school was over yesterday?11. What _______(do) _______ tomorrow? We ________ (play) football.12. There ________ (be) a football match on TV this evening.13. They said they ________ (visit) the Great Wall the next summer holiday.14. Who _______ (dance) the best in your class?15. Will you come if he _____________ (not come)?16. The teacher told us the earth __________ (move) round the sun.17. They _______ (have) a party in the garden if it ________ (not rain) tomorrow.18. She ________ (buy) a sweater yesterday.19. I don’t know if Mr. Wang ______ (go) to Shanghai tomorrow. If he _____ (go), I ______ (ask)him _______ (take) some books to my daughter, because she _______ (study) there.单项选择：1. The students will go to the Summer Palace if it _____ tomorrow.A. D on’t rain.B. doesn’t rainC. won’t rain2. There _____ an English film next week.A. will haveB. is going to haveC. is going to beD. was going to be3. The picture _______ nice.A. looksB. is lookedC. lookD. is looking4. She ______ down and soon fell asleep.A. liveB. lainC. laidD. lay5. They _____ the office at nine yesterday morning.A. reached toB. arrivedC. wentD. get to6. We shall go to Shanghai on business before you _____ back next week.A. wil comeB. cameC. would comeD. come7. Don’t smoke until the plane ______ off.A. takesB. tookC. was takenD. is take8. I saw her ____ the room this morning.A. to enterB. enteredC. enterD. enters9.the teacher asked us ______ to school on time.A. to comeB. comingC. comeD. comes10. John is always ______ others.A. helpB. helpingC. helpsD. to help11. He told us ______ at eight.A. workingB. to workC. workD. worked12. You’d better ______ at home and ______ your homework.A. to stay, doB. stay, doC. to stay, to doD. stay, to do13. He sat down ______ a rest.A. havingB. haveC. to haveD. had14. Uncle Wang knows _______ a washing machine.A. how to makeB. to makeC. how makingD. what to make英语动词第三人称单数形式练习写出下列动词的第三人称单数drink _______ go _______ stay ________ make ________look _________ have_______ pass_______ carry ____come________ watch______ plant_______ fly ________study_______ brush________ do_________ teach_______二、用括号内动词的适当形式填空。
1. He often ________(have) dinner at home.2. Daniel and Tommy _______(be) in Class One.3. We _______(not watch) TV on Monday.4. Nick _______ to the zoo on Sunday.5. ______ they ________(like) the World Cup?6. What _______they often _______(do) on Saturdays?7. _______ your parents _______(read) newspapers every day?8. The girl _______(teach) us English on Sundays.9. She and I ________(take) a walk together every evening.10. There ________(be) some water in the bottle.11. Mike _______(like) cooking.12. They _______(have) the same hobby.13. My aunt _______(look) after her baby carefully.14. You always _______(do) your homework well.15. I _______(be) ill. I’m staying in bed.16. She _______(go) to school from Monday to Friday.17. Liu Tao _______(do) not like PE.18. The child often _______(watch) TV in the evening.19. Su Hai and Su Yang _______(have) eight lessons this term.20. －What day _______(be) it today?－ It’s Saturday.可数名词有单数（Singular Form）和复数(Plu ral Form)两种形式表示一个人或物用单数形式，表示一个以上的人或物用复数形式。